package lab02.test36;

/**
 * Created by MECHREV on 2017/11/9.
 */
public class Postgraduate extends Stduent{
    @Override
    String calGrade() {
        double avg= calAverage();
        if (avg>=90&& avg<=100)
            grade = "优秀";
        else if (avg >= 80 && avg <= 90)
            grade = "良好";
        else if (avg >= 70&& avg <= 80)
            grade = "一般";
        else if (avg >= 60 && avg <= 70)
            grade = "良好";
        else
            grade = "不及格";
        return grade;
    }
}
